5-Volt Supply Output Too Low

Code Number
Scan tool 146
General scan tool P1496
MIL 14

Description
5 Volts Supply Output Too Low

Probable Cause
- 5-volts supply circuit grounded
- PCM failed

Background
- The PCM supplies a regulated 5-volts to the TPS and MAP sensor.
- This DTC is set when both the TPS and MAP sensors have the sensing circuit indicating too low of voltage.

Range of Check
- Ignition switch: ON

Set Condition
- 5-volts feed circuit drops below 4 volts for over four seconds.





Diagnosis